Description of problem:

After upgrade to gnome-session-3.7.2-1.fc19.x86_64
my gnome session no longer starts  (I'm using 2d mode)
making whole gnome-session useless.

#0  g_source_attach (source=source@entry=0x0, context=context@entry=0x0) at gmain.c:1077
1077	  g_return_val_if_fail (source->context == NULL, 0);



#0  g_source_attach (source=source@entry=0x0, context=context@entry=0x0) at gmain.c:1077
#1  0x00007f009dbb79bb in g_unix_signal_add_full (priority=priority@entry=0, signum=signum@entry=10, 
    handler=handler@entry=0x41ca40 <sigusr1_cb>, user_data=0x244a030, notify=notify@entry=0x0)
    at glib-unix.c:250
#2  0x00007f009dbb7a02 in g_unix_signal_add (signum=signum@entry=10, handler=handler@entry=
    0x41ca40 <sigusr1_cb>, user_data=<optimized out>) at glib-unix.c:275
#3  0x000000000040c454 in main (argc=1, argv=0x7fffcecb7588) at main.c:342

print source
$1 = (GSource *) 0x0


Version-Release number of selected component (if applicable):
gnome-session-3.7.2-1.fc19.x86_64


How reproducible:


Steps to Reproduce:
1. startx   with gnome-session
2.
3.
  
Actual results:


Expected results:


Additional info: